Preparation method of micro order niobium foil

A micron-level, niobium foil technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problem of micron-level niobium foil that has not yet reached the thickness, and has not seen thickness, so as to reduce the number of total rolling processes and reduce the number of rolling processes. The effect of large restraining force and guaranteed thickness accuracy

Active Publication Date: 2019-04-12
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the limitation of rolling technology, there are mainly niobium plates and niobium strips on the market, but there is no micron-sized niobium foil with a thickness of less than 10 μm.
For example, the patent "A Rolling Method of Ultra-Thin Niobium Strip" with the application number of 201310286070.3 discloses a rolling method of ultra-thin niobium strip. Thinned to 0.017mm ~ 0.019mm, but not yet reached a thickness of less than 10μm

Method used

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  • Preparation method of micro order niobium foil
  • Preparation method of micro order niobium foil
  • Preparation method of micro order niobium foil

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Embodiment 1

[0038] The preparation method of this embodiment includes the following steps:

[0039] Step 1. The niobium strip is reversibly rolled by a Sendzimir 20-high cold rolling mill under the temperature condition of 15°C to 25°C to obtain the first rolling pass niobium foil; the width of the niobium strip is 100mm and a thickness of 0.15mm, the lateral same plate difference of the niobium strip is 0.01mm, the mass content of niobium in the niobium strip is 99.7%, the mass content of impurity element Fe is 0.005%, and the mass content of C is 0.01% , The mass content of O is 0.015%, and the mass content of H is 0.0008%; the conditions of the reversible rolling in the first pass are: the left coiler and the right coiler of the Sendzimir 20-high cold rolling mill The given rolling tension is 120kg~180kg, the pressure of the pressing cylinder is 25.5kN~26.7kN, the first intermediate roll is a crown roll, and the sum of the crowns of the first intermediate roll is 0.06mm; the first rolling...

Embodiment 2

[0047] The preparation method of this embodiment includes the following steps:

[0048] Step 1. The niobium strip is reversibly rolled by a Sendzimir 20-high cold rolling mill under the temperature condition of 15°C to 25°C to obtain the first rolling pass niobium foil; the width of the niobium strip is 120mm and a thickness of 0.20mm, the lateral same plate difference of the niobium strip is 0.007mm, the mass content of niobium in the niobium strip is 99.5%, the mass content of the impurity element Fe is 0.003%, and the mass content of C is 0.006% , The mass content of O is 0.009%, and the mass content of H is 0.001%; ​​the conditions for the reversible rolling in the first pass are: the left coiler and the right coiler of the Sendzimir 20-high cold rolling mill The given rolling tension is 120kg~180kg, the pressure of the pressing cylinder is 25.5kN~26.7kN, the first intermediate roll is a crown roll, and the sum of the crowns of the first intermediate roll is 0.066mm; the firs...

Embodiment 3

[0056] The preparation method of this embodiment includes the following steps:

[0057] Step 1. Under the temperature condition of 15℃~25℃, the niobium strip is reversibly rolled in the first rolling pass by a Sendzimir 20-high cold rolling mill to obtain a first rolling pass niobium foil; the width of the niobium strip is 110mm, thickness of 0.18mm, the lateral same plate difference of the niobium strip is 0.009mm, the mass content of niobium in the niobium strip is 99.65%, the mass content of impurity element Fe is 0.004%, and the mass content of C is 0.006% , The mass content of O is 0.009%, and the mass content of H is 0.001%; ​​the conditions for the reversible rolling in the first pass are: the left coiler and the right coiler of the Sendzimir 20-high cold rolling mill The given rolling tension is 120kg~180kg, the pressure of the pressing cylinder is 25.5kN~26.7kN, the first intermediate roll is a crown roll, and the sum of the crowns of the first intermediate roll is 0.055...

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Abstract

The invention discloses a preparation method of a micro order niobium foil. According to the method, three rolling process reversible type rolling is performed on a niobium belt by utilizing a Sendzimir twenty-roller cold rolling machine, the obtained niobium foil is cleaned, and subjected to edge splitting and heat treatment after each rolling process reversible type rolling, and finally, the micro order niobium foil is obtained. According to the method, three rolling process rolling is performed on the niobium belt with the width being 100 mm to 120 mm and the thickness being 0.15 mm to 0.2mm by adopting the Sendzimir twenty-roller cold rolling machine. Due to the beneficial effects that the Sendzimir twenty-roller cold rolling machine is large in rolling force and high in rolling precision, by designing a reasonable rolling process, the thickness precision of the micro order niobium foil is greatly guaranteed; meanwhile, through a reasonable annealing process, the structure internal stress of the niobium foil is eliminated in time, influences on the niobium foil in the rolling process are reduced, and finally, the micro order niobium foil with the thickness being 0.007 mm to 0.009 mm is obtained.

Description

Technical field [0001] The invention belongs to the technical field of niobium foil preparation, and specifically relates to a method for preparing micron-level niobium foil. Background technique [0002] Metallic niobium is a kind of rare refractory metal with high melting point. Due to its excellent performance, metallic niobium foil has become a wide range of modern industrial production and technology fields such as electronics industry, chemical industry, atomic energy industry, aerospace, thin film technology and superconducting technology. Applied high-tech materials. Especially as the demand for aerospace and aerospace electrolytic capacitors has increased substantially, higher requirements have also been placed on their reliability and high-frequency characteristics. Ordinary aluminum electrolytic capacitors can no longer fully meet this requirement. Electrolytic capacitors using niobium foil as raw materials are cheaper than tantalum electrolytic capacitors and have be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/40B21B27/02B21B45/02
CPCB21B1/40B21B27/021B21B45/0269
Inventor 薛少博舒滢张国霞闫西安吴欢王国栋倪培彤苏艳妮尚庆慧
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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